The tap water supply in the general United States is supposed to be some of the cleanest water in the world. At least this is what its citizens are told. It might be "clean" inasmuch there are fewer pathogens in it compared to other parts of the world. However, pathogens are not the only things found in water that are harmful to human life. What are these things and why are they found in such concentrated amounts where urban-dwelling Black, Latino and Native Americans live?

Shipping State/Zip/Country - Hint:Street & city are on the next screen.